Bump apps/discourse from `6c155db` to `19b2011`
Bump apps/discourse from `6c155db` to `19b2011`

Bumps [apps/discourse](https://github.com/discourse/discourse) from `6c155db` to `19b2011`.
- [Release notes](https://github.com/discourse/discourse/releases)
- [Commits](https://github.com/discourse/discourse/compare/6c155dba775441ccef9ac21c770102857978286d...19b20116018828f267ba507fa33351a69fe153da)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails